Portion of a speaker housing



FIG. 1 is a perspective view of a portion of a speaker housing showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof, the opposite side elevational view being a mirror image thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a top plan view thereof.

The broken line showings of the feet and the two circular areas on the front of the housing are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a portion of a speaker housing, as shown and described. 